Bid No | 35 |
---|---|
Item for Bid | Development of PAFS (Passive Auxiliary Feedwater System) in MAAP5 |
Notice Date | 2012-02-10 |
Deadline for Bid Submission | 2012-02-14 |
Content |
<font face="Times New Roman">
<p><font face="Times New Roman">Task 1: MAAP5 Development for PAFS <font face="Times New Roman">(Passive Auxiliary Feedwater System)</font></font></p> <p><font face="Times New Roman">a. Development of evaluation model on the temperature and level change of coolant inside the PCCT (Passive Condensation Cooling<br /> Tank) during operation of the PAFS.<br /> - Modeling of PCCT with appropriate nodalization. The model of PCCT, if necessary, can be composed of multi nodes to account<br /> for the natural circulating flow forming around the PCHX in the PCCT.<br /> - Modeling on heat transfer between the PCCT coolant and the PCCT walls.<br /> - Modeling on the vaporizing of the coolant with elevated temperature on the top surface of the cooling pool.<br /> <font face="Times New Roman">b. Development of evaluation model on the change of fluid phase inside the PCHX tube<br /> - Evaluation capability on heat transfer between the fluid inside the tube experiencing phase change from a single phase to two<br /> phases, that is, from steam to condensate, and the inner surface of the PCHX tube.<br /> - Evaluation capability on heat transfer between the PCCT coolant and the exterior surface of the PCHX Tube<br /> </font><font face="Times New Roman">c. Refilling capability of the PCCT cooling water at the inflow rate with range of 230gpm ~ 250gpm when the water level falls below <br /> a set point matching up to the level for preventing exposure of the PCHX tube in the case that the operation of PAFS is continued<br /> over the design life, that is, 8 hours.</font><br /> <br /> </font></p> <p><font face="Times New Roman">Task 2: Review on APR+ MAAP5 Parameters</font></p> <p><font face="Times New Roman">a. Incorporation of the PAFS model with the existing models.<br /> b. Review of the APR+ MAAP5 parameter in terms of the values of parameters and the containment nodalization scheme.<br /> c. Review of the MAAP5 Analysis<br /> <br /> </font></p> <p><font face="Times New Roman">Task 3: Comparison of the MAAP PAFS performance results with those of Experiment (PASCAL Test)</font></p> <p><font face="Times New Roman">a. The MAAP PAFS model shall be verified with comparing with the results of relevant experiments, PASCAL Test.<br /> b. The comparison shall be performed in the following aspects;<br /> - The following accident sequences shall be considered. A series of possible events in each sequence will be provided <br /> by KEPCO-ENC.<br /> + Main Steam Line Break (MSLB)<br /> + Small Break LOCA (SBLOCA)<br /> + Station Blackout (SBO)<br /> + Steam generator tube rupture (SGTR)<br /> <font face="Times New Roman"> - The water level in the 2nd side of steam generator<br /> - Mass flow rate and temperature of steam leaving from the main steam piping to the PCHX<br /> - Transients of thermal equilibrium quality along the PCHX tube<br /> - Temperatures on the interior/exterior surfaces of PCHX tube in each node<br /> - Quantities of energy transferred to the PCCT cooling water in each node used for modeling the PCHX<br /> - The water level of condensate returning to the steam generator economizer in the returning piping which is connected to the lower<br /> header of PCHX<br /> - Mass flow rate and temperature of condensate entering into the economizer<br /> - The level and temperature of PCCT cooling water<br /> <font face="Times New Roman"> - Evaluation on the timing that the thermal-hydraulic conditions of RCS fall within the shut down cooling condition, that is, 450 psi<br /> and 350 F.<br /> <br /> <font face="Times New Roman">Task 4: Analysis and documentation of new models and results<br /> <br /> <font face="Times New Roman">a. Provide the results of MAAP5 PAFS model.<br /> - Theoretical and logical mechanism on the MAAP5 PAFS model<br /> - Recommendation on each parameter value for appropriate use of the MAAP5 PAFS model<br /> b. Performance analysis of MAAP5 PAFS model<br /> - Comparison results with those of the relevant experiments (PASCAL)<br /> - Analysis results for each accident sequence<br /> <br /> <font face="Times New Roman">Task 5: Licensing technical support on MAAP5 severe accident analysis</font><br /> <br /> <font face="Times New Roman">Fauske & Associates, LLC will support the licensing documents and correspondence for MAAP5 PAFS.</font><br /> <br /> <font face="Times New Roman">Task 6: Technical Meeting</font><br /> <br /> <font face="Times New Roman">In this task, it is expected the KEPCO E&C two engineers will travel to Fauske & Associates, LLC office for two times meeting. The first visit for technical meeting will occur while Task 1, 2 and 3 are ongoing. The second visit will occur while Task 4 is ongoing. Questions related to the MAAP5 PAFS model and related issues will be discussed.<br /> <br /> <font face="Times New Roman">Task 7: Document of Consultant Results<br /> <br /> <font face="Times New Roman">Fauske & Associates, LLC shall document the results of Tasks 1 to Tasks 4 and related items from the meeting in a Technical Report. A draft will be provided for review prior to final issue.</font></font></font></font></font></font></font></font></p> </font> |
Attachments |
-
- Bid No
- 35
- Item for Bid
- Development of PAFS (Passive Auxiliary Feedwater System) in MAAP5
- Notice Date
- 2012-02-10
- Deadline for Bid Submission
- 2012-02-14
- Content
-
<font face="Times New Roman">
<p><font face="Times New Roman">Task 1: MAAP5 Development for PAFS <font face="Times New Roman">(Passive Auxiliary Feedwater System)</font></font></p>
<p><font face="Times New Roman">a. Development of evaluation model on the temperature and level change of coolant inside the PCCT (Passive Condensation Cooling<br />
Tank) during operation of the PAFS.<br />
- Modeling of PCCT with appropriate nodalization. The model of PCCT, if necessary, can be composed of multi nodes to account<br />
for the natural circulating flow forming around the PCHX in the PCCT.<br />
- Modeling on heat transfer between the PCCT coolant and the PCCT walls.<br />
- Modeling on the vaporizing of the coolant with elevated temperature on the top surface of the cooling pool.<br />
<font face="Times New Roman">b. Development of evaluation model on the change of fluid phase inside the PCHX tube<br />
- Evaluation capability on heat transfer between the fluid inside the tube experiencing phase change from a single phase to two<br />
phases, that is, from steam to condensate, and the inner surface of the PCHX tube.<br />
- Evaluation capability on heat transfer between the PCCT coolant and the exterior surface of the PCHX Tube<br />
</font><font face="Times New Roman">c. Refilling capability of the PCCT cooling water at the inflow rate with range of 230gpm ~ 250gpm when the water level falls below <br />
a set point matching up to the level for preventing exposure of the PCHX tube in the case that the operation of PAFS is continued<br />
over the design life, that is, 8 hours.</font><br />
<br />
</font></p>
<p><font face="Times New Roman">Task 2: Review on APR+ MAAP5 Parameters</font></p>
<p><font face="Times New Roman">a. Incorporation of the PAFS model with the existing models.<br />
b. Review of the APR+ MAAP5 parameter in terms of the values of parameters and the containment nodalization scheme.<br />
c. Review of the MAAP5 Analysis<br />
<br />
</font></p>
<p><font face="Times New Roman">Task 3: Comparison of the MAAP PAFS performance results with those of Experiment (PASCAL Test)</font></p>
<p><font face="Times New Roman">a. The MAAP PAFS model shall be verified with comparing with the results of relevant experiments, PASCAL Test.<br />
b. The comparison shall be performed in the following aspects;<br />
- The following accident sequences shall be considered. A series of possible events in each sequence will be provided <br />
by KEPCO-ENC.<br />
+ Main Steam Line Break (MSLB)<br />
+ Small Break LOCA (SBLOCA)<br />
+ Station Blackout (SBO)<br />
+ Steam generator tube rupture (SGTR)<br />
<font face="Times New Roman"> - The water level in the 2nd side of steam generator<br />
- Mass flow rate and temperature of steam leaving from the main steam piping to the PCHX<br />
- Transients of thermal equilibrium quality along the PCHX tube<br />
- Temperatures on the interior/exterior surfaces of PCHX tube in each node<br />
- Quantities of energy transferred to the PCCT cooling water in each node used for modeling the PCHX<br />
- The water level of condensate returning to the steam generator economizer in the returning piping which is connected to the lower<br />
header of PCHX<br />
- Mass flow rate and temperature of condensate entering into the economizer<br />
- The level and temperature of PCCT cooling water<br />
<font face="Times New Roman"> - Evaluation on the timing that the thermal-hydraulic conditions of RCS fall within the shut down cooling condition, that is, 450 psi<br />
and 350 F.<br />
<br />
<font face="Times New Roman">Task 4: Analysis and documentation of new models and results<br />
<br />
<font face="Times New Roman">a. Provide the results of MAAP5 PAFS model.<br />
- Theoretical and logical mechanism on the MAAP5 PAFS model<br />
- Recommendation on each parameter value for appropriate use of the MAAP5 PAFS model<br />
b. Performance analysis of MAAP5 PAFS model<br />
- Comparison results with those of the relevant experiments (PASCAL)<br />
- Analysis results for each accident sequence<br />
<br />
<font face="Times New Roman">Task 5: Licensing technical support on MAAP5 severe accident analysis</font><br />
<br />
<font face="Times New Roman">Fauske & Associates, LLC will support the licensing documents and correspondence for MAAP5 PAFS.</font><br />
<br />
<font face="Times New Roman">Task 6: Technical Meeting</font><br />
<br />
<font face="Times New Roman">In this task, it is expected the KEPCO E&C two engineers will travel to Fauske & Associates, LLC office for two times meeting. The first visit for technical meeting will occur while Task 1, 2 and 3 are ongoing. The second visit will occur while Task 4 is ongoing. Questions related to the MAAP5 PAFS model and related issues will be discussed.<br />
<br />
<font face="Times New Roman">Task 7: Document of Consultant Results<br />
<br />
<font face="Times New Roman">Fauske & Associates, LLC shall document the results of Tasks 1 to Tasks 4 and related items from the meeting in a Technical Report. A draft will be provided for review prior to final issue.</font></font></font></font></font></font></font></font></p>
</font>
- Attachments
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